論文中本人以逆微乳化法去合成磁性奈米粒子，這個方式主要是利用在非極性有機溶液當中使溶解的界面活性劑構成一個奈米級的空洞，控制化學反應在空洞中反應合成粒子，也因為粒子生成受到空洞的限制，以致生成的粒子為奈米粒子。
在water/ Didodecyldimethylammonium bromie/ toluene的逆微乳化系統中，本人以硼氫化鈉來還原系統中的Co的金屬前驅鹽氯化亞鈷來做研究，在實驗中本人改變在Didodecyldimethylammonium bromie / toluene系統時的氯化亞鈷濃度以改變粒子的大小，本人也嘗試改變反應的速度來研究對奈米粒子生成時所造成的影響。本人將實驗所得的奈米粒子分別以穿透式電子顯微鏡(TEM)、動態光散射(DLS)、X射線繞射儀(XRD)、能量分散光譜儀(EDS)、SAED(選區繞射)與TGA(熱重量分析儀)等儀器作尺寸、結構、組成分析。利用穿透式電子顯微鏡(TEM)所得的圖形可以得到奈米粒子的大小為2.8~3.6nm，而由X射線繞射儀(XRD)、能量分散光譜儀(EDS)、SAED(選區繞射)與TGA(熱重量分析儀)可以驗證實驗所得的成份確實有磁性粒子Co的存在。

In this dissertation, i has used inverse microemulsions technique to synthesize nano-magnetic particles . This method made nanometer sized cages formed by dissolving surfactant molecules in an apolar organic solvent. The chemical reactions were carried out inside the cages to synthesize nanoparticles. Because the growth of the naoparticles are limited in the cages, the particles were nanometer sized particles.
The preparation of cabalt nanoparticles by the reduction of Cobalt(II) chloride hexahydrate with Sodium borohydride in the reverse microemulsion solutions of water/ Didodecyldimethylammonium bromie/ toluene was investigated. i changed the Cobalt(II) chloride hexahydrate concentration in the Didodecyldimethylammonium bromie/ toluene system to analysis the particle size. i also changed the reactive speed to study the effect of nanoparticle growth. The size, structure, and composition distribution of the resultant nanoparticles were caharacterized by employing TEM,DLS, XRD, SAED, TGA, and EDS. TEM photographs showed that the obtained cobalt nanoparticles were about 2.8~3.6nm. XRD, SAED, TGA, and EDS pattern that cobalt nanoparticles were exited.

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